RTW intinerary, advice?

Maybe i want to cut one of the destinations, so i can have more time in the other destinations

I think you have allowed yourself a very good amount of time in each of your destinations (particular compared to many other posters). There will always be places where you can easily add more time or subtract time. Remember to incorporate little holidays in your travels as travelling can be tiring due to constant packing/unpacking and being on the move.

I maybe want to stay longer in the phillippines and in central america, so now im thinking of not going to indonesia, is that a good idea? Or maybe substract 2 weeks india and add these on philippines

Hi, sounds like a great itinerary.

You may want to add on another week or so for Central America, but (as a previous responder said), this looks like a pretty realistic and not-too-rushed plan. Have an absolutely fantastic trip!

Julie

You can easily add 2 weeks to the Phillippines and not go to Indonesia (you will save money on flights and visa doing that), maybe then add the remaining 2 weeks to either Central America/Mexico or USA (spend more time in the national parks instead of cities).
Your timeframe is overall very good, but keep your itinnerary open and flexible and maybe just get your big major flights far in advance (like the one to SA)

In the U.S., we refer to Las Vegas as "Lost Wages." It's not a place for budget travel. If you don't know what you want to do there--and if you haven't saved enough money for what you can do there--replace it with a car rental and a visit to some of the natural wonders in the area. Even nearby sites like Red Rock National Conservation Area or Valley of Fire State Park will be spectacular.

The reason i want to go vegas, is because from here you can fly cheaper to cancun, where i will start my trip in central america, i plan to stay just 1 night in vegas!

Overall not bad but I do think it is a little rushed in places. When you travel for over a year you need to slow down or you'll wash-out. Cutting out a destination in order to spend more time in others is a good idea.